Engineer&#39;s valve.



E. J. SCHANCK.

ENGINEER'S VALVE.

APPLICATION FlLED APR.29, I9l6.

Pabten'bsd Jan. 15, 1918.

flame/y J; Sahmmh To all whom it may concern.

nn rrnn ear EMERY J. scnAiicK, or CEN'IBAJLI'A, .wasnme'ro v.

Enemnnns VALVE.

Specification of Letters Patent Application filed April 29,'1916.-Serial No. 94,440.

Becit known that I, EMERY J. ScIrANCn, a citizen of the United States,-resldlng at Centralia, in the county oi Lewis and State oi iashington,have invented certain new and useful Improvements in Engineers" Valves,of which. the following is a specification. v My invention relatestOrlIIiPlOVGlDQDlIS in engineers brake valves:

An important object of the invention to provide a-brake valve oftheabove'mein tioned"character, so constructedv that the.

sameniay be manually operated to-supply a (lGSllECl degree or pressureto the brakes, and

which automatically :operates: to retain such 1 pressure constant for. aprolonged period.

A iurther ObJect'of the lnventlon is to provide a valve of the abovementioned character, which is simplein construction, inex-.

pensive to manufacture, convenient in use,

strong and durable.

Other ob ects .and advantages of the invention will beapparent duringthecourse of the following description.

Inthe accompanylng drawmgs forming a part-of this specification andin.which like numerals are employed to designate like parts throughout thesame,-{

Figure 1 is'a central vertical longitudinal sectional viewthroughjapparatns embodying the invention,

Fig. 2 is a horizontal sectional view taken on line 22 of Fig. 1, and, i

Fig. 3 is a section ofaplurality of elements, separated and inthe-position to be assembled,

In the drawings, wherein for the pur pose of illustration is shown apreferred embodiment of my invention, the numeral 5 designates a valvecasing, the upper end of which is closed by a cap 6 having a gland 7, asshown.

The casing 5 is provided in its bottom with a pressure inlet coupling 8having connection with the pressure supply pipe 9. Upon one side thecasing 5 has an outlet coupling 10 having connection with a pressureoutlet pipe 11, which leads to the brakes or train line. Connected withthe opposite side of the casing 5 is a pipe 12, communicating with thepressure gage 13, which in dicates the degree of pressure being appliedto the brakes.

The gland 7 has a screw-threaded opening 14;, receiving an exteriorlyscrew-threaded tubular stem 15, the lower endot which is forked toprovide spaced arms 16. Those arms are adapted to fit between'ears l7,

rigidly mounted upon axrotatable exhaust valve 19," and preferablyformed integral This exhaust valve has an extherewithl haust. port20formed therein, and adapted to be movedinto and out of registratioirwith an exhaust port 21 formedin thebottom of the casing 5. The exhaustvalve 19 is rotatably mounted uponthe bottom of the casing 5 and has acentral opening in permanent registration Wltll. the coupling Rigidlyattached to the upper end oi the spindlepl5 a hand lever 2", adapted to:

contact-with a stop 24:, rigidly attached to thevcap 6, when thepressureis cut oil from the brakes and exhaust port 20. moved into.

registration with-the exhaust port 21 whereby the interior of the casing5 is placed in communication with thQMDHIOSPlIGPB. The

numeral 25 designates apressure control valve, which is' verticallymovable, ar 'anged near and above the inlet coupling 8 and hasanextension 26 operating therein. The valve 25 is provided with an openingor. re cess 27, whichdoes not extend entirely therethrough and thisrecess receives the reduced end 28 of a coupling 29. The upper end ofthis couplingfits within a compressioncoil spring30, receiving thereduced lower end of a coupling 31.: Fitting within arecess in thecoupling 31 is a tension rod 32-, extending through the tubular spindle15 and having screw-threaded engagement therewith. The upper endof thisrod. is preferably formed square for engagement with a suitable toolfor. turning it and the tensionrod carries lock nut 83, as is obvious.

In operation, the lever 23 is swung to the inactive or exhaust position,until it contacts with the stop 24. The exhaust port 20 is now inregistration with the exhaust port 21. If pressure is fed into thecasing 5 from coupling 8, the tension rod 32 is adjusted until thespring 30 is placed under compression to out off this supply ofpressure.

It may be assumed that there is a constant llatcnted Jan. 15, mm.

To apply the brakes, the lever 23 is swung to the right, and turns theexhaust valve 19 to the closed position.' The turning movement of thestem causes it to move upwardly, thereby reducing the compression of thespring 30, whereby the sixty pounds pressure in the pipe'9 will unseatthe valve 25. This valve remains unseated until the pressure in theshell 5 is equal to the pressure in the pipe 9, there being then notendency for pressure to pass through the opening of the valve seat, atwhich time the spring 30 will close the valve 25. The valve sorted towithout departing from the'spirit of the invention or the scope of thesubjoined claims. 7 Having thus described my invention, I claim: V

1; Inan air brake valve of the character described, a casing provided inits bottom with a fluid pressure inlet opening and in its side with afiuid pressure outlet opening, said casing being also provided in itsbottom with an exhaust opening which leads to the 7 atmosphere, arotatable disk valve arranged upon the bottom of the casing and having asubstantially centrally arranged openin in permanent communication withthe uid pressure inlet opening and an exhaust opening adapted formovement into and outof registration with the first named exhaustopening, a rotatable spindle having screwof parts may be re let-opening,said casing being alsoprovided in its bottom with an exhaust openingwhich leads to the atmosphere, "a rotatable disk valve arranged uponthebottom of the casing and having a substantiallycentrally arrangedopening in permanent communication with the fluid pressureinlet openingand an exhaust opening adapted for movement intoand outof registrationwith the first named exhaust opening, standing lugs formed upon theupper side. of the disk valve, a rotatable tubular spindle havingscrew-threaded engagement with the top of the casingtomoveflongitudinally pairs of up- 155 2. In an a1r brake valve of thecharacter when rotated and provided at its lower end i with a forkhaving tinesfitting between-the pairs of lugs, means to turnthe spindle,a

movable pressure inlet valve arranged within the'casing adjacent itsbottom and serving to normally close the pressure inlet openmg, a sprlngengaging the pressure .inlet valve, and a rod having screw-threaded entgagement within the tubular spindle and connected with the spring. 7

Intestimony whereof I affix in presence of two witnesses.

EMERY J. SCHANCK,

my signature Witnesses B. H. RHoDns, VV.- H. Hones.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

I Washington, 'D. C. f V r

